[aopinthesky]

>>>But I still don't understand why all chapters have to be the same size. <<<

Sorry to hijack this thread, but Little E, please clarify something for me. Is there more than one NPC sorority on your campus? If there is, surely there is a campus total that all of those groups aim for. This is not a concept particular to Ole Miss, or to the "Southern Rush" that there is so much talk about lately on GC. On just about all campuses where there is a Panhellenic Council, there is an established quota and total. To remain below total is usually not good for the health of a chapter in the long run.
If you are on a campus where you are the only group, then I can understand why you don't have to be concerned about total.